Anti-inflammatory and anti-nociceptive activities of Pluchea quitoc (DC.) ethanolic extract

I M C Barros, L D G Lopes, M O R Borges, A C R Borges, M N S Ribeiro, S M F Freire
Journal of Ethnopharmacology 2006 July 19, 106 (3): 317-20
Pluchea quitoc DC. (Asteraceae), a plant widely distributed throughout Brazil and popularly known as "quitoco", "madre-cravo" or "tabacarana", is used in traditional medicine for the treatment of inflammation, as well as of digestive and respiratory diseases. The anti-inflammatory and anti-nociceptive activities of the ethanolic extract (EE) from aerial parts of this plant were evaluated in mice and rats. Oral treatment with the EE (1-2g/kg, p.o.) decreased the paw oedema induced by carrageenan in rats, showed anti-nociceptive effects on the tail-flick test and on acid-induced writhing in mice, and inhibited both phases of pain (neurogenic and inflammatory) of the formalin test in rats. Topical application (EE 1.25, 2.5 and 5.0mg) inhibited the ear oedema induced by croton oil in mice. The results support the folkloric use of the plant in inflammatory processes.

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